As far as one can tell is a big limitation with code like: #if (defined(__i386__) || defined(__arm__) || defined(__mips__)) && > (SIZEOF_VOIDP == 4) > > #define FREELIST_POINTER(_x) (_x).s.pointer > > #define FREELIST_VERSION(_x) (_x).s.version > > #define SET_FREELIST_POINTER_VERSION(_x, _p, _v) \ > > (_x).s.pointer = _p; \ > > (_x).s.version = _v > > #elif TS_HAS_128BIT_CAS > > #define FREELIST_POINTER(_x) (_x).s.pointer > > #define FREELIST_VERSION(_x) (_x).s.version > > #define SET_FREELIST_POINTER_VERSION(_x, _p, _v) \ > > (_x).s.pointer = _p; \ > > (_x).s.version = _v > > #elif defined(__x86_64__) || defined(__ia64__) || defined(__powerpc64__) > || defined(__aarch64__) || defined(__mips64) > > #define FREELIST_POINTER(_x) \ > > ((void *)(((((intptr_t)(_x).data) << 16) >> 16) | > (((~((((intptr_t)(_x).data) << 16 >> 63) - 1)) >> 48) << 48))) // sign > extend > > #define FREELIST_VERSION(_x) (((intptr_t)(_x).data) >> 48) > > #define SET_FREELIST_POINTER_VERSION(_x, _p, _v) (_x).data = > ((((intptr_t)(_p)) & 0x0000FFFFFFFFFFFFULL) | (((_v)&0xFFFFULL) << 48)) > > #else > > #error "unsupported processor" > > #endif >
On Mon, Dec 10, 2018 at 5:02 PM Leif Hedstrom <zw...@apache.org> wrote: > > > > On Dec 10, 2018, at 10:29 AM, SUSAN HINRICHS <shinr...@ieee.org> wrote: > > > > Based on Fei's measurements, the ATS freelists provide no benefit over > > jemalloc. We are now in a position to do larger tests over our > production > > installs. > > > Agreed, that was generally what I noticed too, except, I could not get ATS > to be stable with just jemalloc. It’d eventually get unhappy, but I didn’t > investigate further. But this is my point, lets focus the efforts on moving > us forward, to jemalloc, and not mess around with freelist as it is, > because it works fine as far as I can tell. > > — leif > >
